Jan ( N = 594 )

Feb ( N = 550 )

Mar ( N = 618 )

Apr ( N = 583 )

May ( N = 617 )

Jun ( N = 584 )

Jul ( N = 575 )

Aug ( N = 544 )

Sep ( N = 595 )

Oct ( N = 620 )

Nov ( N = 600 )

Dec ( N = 616 )